<template>
  <div class="add-role">
    <header class="add-header">
      <div class="left">
        <span class="arrow" @click="$router.back()"><i class="el-icon-arrow-left" />返回</span>
        <span>|</span>
        <span>{{ id ?'编辑角色':'添加角色' }}</span>
      </div>
      <div class="right">
        黑马程序员
      </div>
    </header>
    <main class="add-main">
      <div class="step-container">
        <el-steps direction="vertical" :active="nowActive">
          <el-step title="角色信息" />
          <el-step title="权限信息" />
          <el-step title="检查并完成" />
        </el-steps>
      </div>
      <div v-show="nowActive===0" class="form-container">
        <div class="title">角色信息</div>
        <div class="form">
          <el-form ref="roleForm" class="form-box" :model="roleForm" :rules="roleRules">
            <el-form-item label="角色名称" prop="roleName">
              <el-input v-model="roleForm.roleName" />
            </el-form-item>
            <el-form-item label="角色描述" prop="remark">
              <el-input v-model="roleForm.remark" />
            </el-form-item>
          </el-form>
        </div>
      </div>
      <div v-show="nowActive===1" class="form-container">
        <div class="title">权限配置</div>
        <div class="form">
          <div class="tree-wrapper">
            <div v-for="item in treeList" :key="item.id" class="tree-item">
              <div class="tree-title">{{ item.title }}</div>
              <el-tree
                ref="tree"
                :data="item.children"
                show-checkbox
                default-expand-all
                check-strictly
                node-key="id"
                highlight-current
                :props="{ label: 'title' }"
              />
            </div>
          </div>
        </div>
      </div>
      <div v-show="nowActive===2" class="form-container">
        <div class="title">检查并完成</div>
        <div class="form">
          <div class="info">
            <div class="form-item">角色名称：{{ roleForm.roleName }}</div>
            <div class="form-item">角色描述：{{ roleForm.remark }}</div>
            <div class="form-item">角色权限：</div>
            <div class="tree-wrapper">
              <div v-for="item in treeList" :key="item.id" class="tree-item">
                <div class="tree-title">{{ item.title }}</div>
                <el-tree
                  ref="diabledTree"
                  :data="item.children"
                  show-checkbox
                  default-expand-all
                  check-strictly
                  node-key="id"
                  :highlight-current="false"
                  :props="{ label: 'title', disabled:()=> true}"
                />
              </div>
            </div>
          </div>
        </div>
      </div>
    </main>
    <footer class="add-footer">
      <div class="btn-container">
        <el-button :disabled="(nowActive===0)" @click="last">上一步</el-button>
        <el-button type="primary" @click="next">{{ nowActive===2?'完成':'下一步' }}</el-button>
      </div>
    </footer>
  </div>
</template>

<script>
import { getRoleTreeAPI, createRoleUserAPI, getRoleDetailAPI, editRoleAPI } from '@/apis/role'
export default {
  data() {
    return {
      nowActive: 0, // 步骤-计数器
      roleForm: {
        roleName: '',
        remark: ''
      },
      roleRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ],
        remark: [
          { required: true, message: '请输入描述角色的信息', trigger: 'blur' }
        ]
      },
      treeList: [], // 权限树组件
      perms: [], // 添加页面-二维数组
      detailPerms: [] // 编辑页面下-回显的二维数组
    }
  },
  computed: {
    id() {
      return this.$route.query.roleId
    }
  },
  async created() {
    await this.getTreeList()
    // 编辑页面-获取指定用户id
    if (this.id) {
      await this.getRoleDetailFn(this.id)
    }
  },
  methods: {
    // 上一步
    last() {
      this.nowActive > 0 && this.nowActive--
    },
    // 下一步
    async next() {
    //   console.log('值：', (!this.nowActive))
      if (!this.nowActive) {
        await this.$refs.roleForm.validate()
        this.nowActive < 2 && this.nowActive++
        // 编辑：回显第二个数据
        if (this.id) {
          this.$nextTick(() => {
            this.$refs.tree.forEach((treeCom, index) => {
              treeCom.setCheckedKeys(this.detailPerms[index])
            })
          })
        }
      } else if (this.nowActive === 1) {
        this.perms = []
        this.$refs.tree.forEach(treeCom => {
          const keys = treeCom.getCheckedKeys()
          //   console.log(keys)
          this.perms.push(keys)
        })
        const arr = this.perms.flat()
        if (arr.length > 0) {
          this.nowActive < 2 && this.nowActive++
          this.$nextTick(() => {
            this.$refs.diabledTree.forEach((diaCom, index) => {
              diaCom.setCheckedKeys(this.perms[index])
            })
          })
        }
      } else {
        if (this.id) {
          await editRoleAPI({
            ...this.roleForm,
            perms: this.perms,
            roleId: this.id
          })
        } else {
          await createRoleUserAPI({
            ...this.roleForm,
            perms: this.perms
          })
        }
        this.$message({
          type: 'success',
          message: '添加成功'
        })
        this.$router.back()
      }
    },
    // 获取权限树信息
    async getTreeList() {
      const res = await getRoleTreeAPI()
      //   console.log(res)
      this.treeList = res.data
    },
    // 获取指定id的角色权限
    async getRoleDetailFn(id) {
      const res = await getRoleDetailAPI(id)
      console.log(res)
      this.roleForm.roleName = res.data.roleName
      this.roleForm.remark = res.data.remark
      this.detailPerms = res.data.perms
    }
  }
}
</script>
  <style scoped lang="scss">
  .add-role {
    background-color: #f4f6f8;
    height: 100vh;

    .add-header {
      display: flex;
      justify-content: space-between;
      padding: 0 20px;
      height: 64px;
      line-height: 64px;
      font-size: 16px;
      font-weight: bold;
      background-color: #fff;

      .left {
        span {
          margin-right: 4px;
        }

        .arrow {
          cursor: pointer;
        }
      }

      .right {
        text-align: right;
      }
    }

    .add-main {
      position: fixed;
      top: 64px;
      bottom: 88px;
      width: 100%;
      overflow-y: auto;
      background: #f4f6f8;
      padding: 20px 230px;
      display: flex;
      .step-container {
        height: 400px;
        width: 200px;
      }
      .form-container {
        flex:1;
        background-color: #fff;
        overflow-y: auto;
        .title {
          height: 60px;
          line-height: 60px;
          padding-left: 20px;
        }
        .form {
          margin-bottom: 20px;
          padding: 20px 65px 24px;
          .el-form {
            display: flex;
            flex-wrap: wrap;
          }
          .info{
            font-size:14px;
            color:#666;
            .form-item{
              margin-bottom:20px;
            }
          }
        }
        .form-box{
          width: 600px;
          display: flex;
          flex-direction: column;
        }
      }
    }

    .add-footer {
      position: fixed;
      bottom: 0;
      width: 100%;
      padding: 24px 50px;
      color: #000000d9;
      font-size: 14px;
      background: #fff;
      text-align: center;
      z-index: 10001;
    }
    .tree-wrapper {
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        .tree-item {
          flex: 1;
          padding: 0px 4px;
          text-align: center;
          .tree-title {
            background: #f5f7fa;
            text-align: center;
            padding: 10px 0;
            margin-bottom: 12px;
          }
        }
      }
  }
  </style>
